CPC Subgroup
F16J 15/40 by means of fluid
Full Title
Sealings > between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) > by means of fluid
4 direct subcodes
Child Classifications
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- F16J 15/42 kept in sealing position by centrifugal force
- F16J 15/43 kept in sealing position by magnetic force